Portable charger



FIG. 1 is a perspective view of portable charger showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a right side elevational view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

The broken lines shown are for illustrative purpose only and form no part of the claimed design. 

The ornamental design for portable charger, as shown and described. 